Yet another LS2020H that won't stay running UGHHHH

[DonKL]

So here we go again. This started years ago...tractor starts but dies when I release the key from the starting position. Last year it "solved" itself when I held the key in the sweet spot between start and run position for 60 seconds with the engine running. Then I released the key and BINGO...it kept running for the day. The next day it might start and run perfectly...or maybe I'd have to let it run again with the key not released completely until it "warmed up" for about 60 seconds. When the starting procedure acts correctly I can hear a solenoid(?) clicking....difficult to know where the clicking was coming from as the general rumble of the engine almost covered the sound...but I could definitely here a specific click as the engine stayed running after releasing the key. I just don't know where that click is coming from. This has happened off and on for years. This spring it it's been running beautifully...no problems with starting and running.

I should add that I replaced the starting switch early last year and it helped with the situation for months and months. Maybe I should replace it once again and see what happens???

This morning, sadly,...same ol' problem has reappeared but now, even after holding the key in the sweet spot (between the start and run position) the engine shuts off again when I release the key, no matter how long I hold the key in the sweet spot position. No "clicking" sound. Point me in the right direction??? Please!!!

Thanks in advance for your advice.

Don

 

[LS Tractor Owner]

Probably the switch again..... but... it could be anything from a bad ground to a badly corroded plug / connector.

Try to go over all the wires, check for abrasions/bare wires. Check all the connections, clean the grounds, check the multiple safety switches to make sure they are functioning. AFTER you do those things, then try another switch.

Good luck, chasing gremlins isn't fun......

 

[Seven Gables]

I’d be checking your fuel shut off solenoid on your injection pump . See if you’re getting power to it with a test light, should have power to it with key in run position. Could possibly be just loose or bad connection, if not it’s probably faulty

 

[DonKL]

I’d be checking your fuel shut off solenoid on your injection pump . See if you’re getting power to it with a test light, should have power to it with key in run position. Could possibly be just loose or bad connection, if not it’s probably faulty

This problem has been happening for at least a year...possibly more. I'm mechanically inclined but a bit intimidated by how diesels work. Low and behold, I ordered the solenoid, installed it and BINGO...I have my tractor running again! I can't thank you enough for your advice. Wasn't too difficult to install either. Again, much much much appreciated!!!!